Motorcycle stool



FIG. 1 is a side view of a motorcycle stool, showing our new design; the opposite side view is a mirror image thereof;

FIG. 2 is a top view thereof; the bottom view is not a part of the claimed design;

FIG. 3 is a front view thereof; and,

FIG. 4 is a rear view thereof. 

The ornamental design for a motorcyle stool, as shown and described. 